LDP over RSVP-TE

[Ynysmeudwy99]

Afternoon,

Im studying for the NRS II and have a lab environment configured using the Image /rel12.0/b1/r6

When I configure LDP over RSVPE-TE and use CSPF I get the following output for the CSPF calculated route:

ComputedHops:
172.16.0.150(S)
-> 172.16.0.149(SA)
-> 10.0.0.40(L)

Any idea's what the (SA) signifies for hop 172.16.0.149. I appreciate S is for strict and L is for loose but can't seem to find a reference for SA?

Thanks

[mivens]

From the output of show router mpls lsp path detail, the A flag designates an ABR if using Inter-Area Traffic Engineering.

Code: Select all

*A:PE-1# show router mpls lsp "LSP-PE-1-PE-10" path detail 
===============================================================================
MPLS LSP LSP-PE-1-PE-10 Path  (Detail)
===============================================================================
Legend : 
    @ - Detour Available              # - Detour In Use
    b - Bandwidth Protected           n - Node Protected
    s - Soft Preemption           
    S - Strict                        L - Loose
    A - ABR
===============================================================================

There is example output in the Advanced Configuration Guide

[Ynysmeudwy99]

Thanks matey. Would help if I used my eyes

So when using ISIS as the IGP it identifies the L2 router (S) on the path?

[mivens]

Yes, if you are using ISIS as the IGP, the hops will be marked as strict or loose in the same way.